I'm only going to post one pattern for each thread in this forum. Should I get to the point of creating a thread in the Solving Techniques forum, then I'll move each head post from the threads here into messages in a single thread there.

I'm adding this pattern to this thread because of its similarity to the 2x variant above ... and because of ronk's comment. When an X-Wing exists in the UR cells, then there's no "essential difference" from applying the first pattern 2x times, or the following pattern once.

I've updated the head post and hope that I've addressed your point/concerns. My intent was to show that 2x applications of a particular pattern would lead to eliminations equivalent to a known UR Type.